There are three parameters that contribute to the signal: the gain on the amplifier, the exposure or shutter time and the actual flux of light. In this section I’ll explore these parameters with the goal of achieving a stable signal that responds linearly to changes in light conditions.
The first thing to do is to find saturating conditions that allow for subsequent fine tuning. The first experiment consisted on measuring light at increasing exposure times with 10 ms increments, from 10 to 970 ms. This was done with full light intensity and a gain of 1 (default). From visual inspection already it can be seen that between 40 ms and 50 ms the image starts to show burned pixels, thus to saturate.
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